The EVK1100 provides a joystick to design Human to Machine Interface for software developments.
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The joystick inputs are low level active. (ie : the PVR register value is 0 when the joystick is set in a direction and/or pressed, and 1 otherwise)
The pinout is as follow :
Joystick Pin | Joystick Direction | GPIO Name | Alternate function used |
---|---|---|---|
Joy_A | LEFT | PA 25 | SCAN_0 |
Joy_B | UP | PA 26 | SCAN_1 |
Joy_C | DOWN | PA 27 | SCAN_2 |
Joy_D | RIGHT | PA 28 | SCAN_3 |
EXTINT | PUSH | PA 20 | EXTINT_8 |
see below the hardware schematic :
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In order to use the joystick, two ways are available :
Using GPIO interrupts need to :
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